An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 5915-01-282-9847
NSN 6240-01-179-1189
NSN 5895-01-436-6812
NSN 5920-01-520-6954
NSN 6150-01-145-0396
NSN 5905-01-210-3819
NSN 6320-00-164-4087
NSN 6620-01-630-6759
NSN 6105-01-208-1725
NSN 5965-01-261-9508
NSN 5996-00-298-1932
NSN 6685-00-175-6932